Lesson Summary in Visual Basic .NET

Generation QR Code in Visual Basic .NET Lesson Summary

Lesson Summary
Paint QR-Code In VB.NET
Using Barcode creator for Visual Studio .NET Control to generate, create QR-Code image in Visual Studio .NET applications.
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QR Code Recognizer In Visual Basic .NET
Using Barcode decoder for .NET Control to read, scan read, scan image in .NET applications.
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The Image and Bitmap classes enable you to edit or create pictures and save the results as a file. To display a picture in a Windows Forms window, load the picture into an instance of the Image or Bitmap class, create an instance of the PictureBox control, and then use the Image or Bitmap object to define the PictureBox.BackgroundImage property. To create and save a picture, create a Bitmap object, edit it using a Graphics object, and then call the Bitmap.Save method. To display an icon, call the Graphics.DrawIcon or Graphics.DrawIconUnstretched methods using one of the properties of the SystemIcons class.
Create Bar Code In VB.NET
Using Barcode drawer for .NET framework Control to generate, create barcode image in .NET framework applications.
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Recognizing Barcode In Visual Basic .NET
Using Barcode decoder for .NET Control to read, scan read, scan image in Visual Studio .NET applications.
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6
QR Code JIS X 0510 Creator In C#.NET
Using Barcode generation for Visual Studio .NET Control to generate, create Quick Response Code image in .NET applications.
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QR Creation In VS .NET
Using Barcode generator for ASP.NET Control to generate, create Quick Response Code image in ASP.NET applications.
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Graphics
Draw QR In .NET Framework
Using Barcode generator for VS .NET Control to generate, create QR Code 2d barcode image in .NET applications.
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Code128 Creator In Visual Basic .NET
Using Barcode printer for .NET Control to generate, create Code 128 Code Set B image in VS .NET applications.
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Lesson Review
QR Code JIS X 0510 Maker In VB.NET
Using Barcode generator for .NET framework Control to generate, create QR Code 2d barcode image in .NET framework applications.
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Encode 1D In Visual Basic .NET
Using Barcode generation for .NET framework Control to generate, create Linear 1D Barcode image in .NET applications.
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You can use the following questions to test your knowledge of the information in Lesson 2, Working with Images. The questions are also available on the companion CD if you prefer to review them in electronic form.
UPC-A Creator In VB.NET
Using Barcode generator for .NET Control to generate, create UCC - 12 image in .NET applications.
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Making MSI Plessey In VB.NET
Using Barcode printer for .NET framework Control to generate, create MSI Plessey image in VS .NET applications.
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NOTE
Making Data Matrix In Java
Using Barcode maker for Eclipse BIRT Control to generate, create Data Matrix image in BIRT reports applications.
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2D Barcode Creation In Java
Using Barcode generator for Java Control to generate, create 2D Barcode image in Java applications.
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Answers
Make GS1 128 In Objective-C
Using Barcode generator for iPad Control to generate, create EAN / UCC - 13 image in iPad applications.
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Encode Code 39 In Java
Using Barcode encoder for Eclipse BIRT Control to generate, create USS Code 39 image in BIRT reports applications.
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Answers to these questions and explanations of why each answer choice is right or wrong are located in the Answers section at the end of the book.
Draw Barcode In .NET
Using Barcode creator for ASP.NET Control to generate, create barcode image in ASP.NET applications.
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Draw ANSI/AIM Code 128 In None
Using Barcode maker for Excel Control to generate, create Code 128B image in Excel applications.
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1. Which of the following classes could you use to display a JPEG image from an existing file in a form (Choose all that apply.) A. System.Drawing.Image B. System.Drawing.Bitmap C. System.Drawing.Imaging.Metafile D. System.Windows.Forms.PictureBox 2. How can you draw a black border around a JPEG image that you have saved to disk and then save the updated image back to the disk A. Create a Graphics object by loading the JPEG image from the disk. Draw the border by calling Graphics.DrawRectangle. Finally, save the updated image by calling Graphics.Save. B. Create a Bitmap object by loading the JPEG image from the disk. Draw the border by calling Bitmap.DrawRectangle. Finally, save the updated image by calling Bitmap.Save. C. Create a Bitmap object by loading the JPEG image from the disk. Create a Graphics object by calling Graphics.FromImage. Draw the border by calling Graphics.DrawRectangle. Finally, save the updated image by calling Bitmap .Save. D. Create a Bitmap object by loading the JPEG image from the disk. Create a Graphics object by calling Bitmap.CreateGraphics. Draw the border by calling Graphics.DrawRectangle. Finally, save the updated image by calling Bitmap .Save. 3. Which format is the best choice to use if you want to save a photograph that could be opened by a wide variety of applications A. ImageFormat.Bmp B. ImageFormat.Gif
Barcode Generator In None
Using Barcode encoder for Word Control to generate, create bar code image in Office Word applications.
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Encoding Code 128 Code Set C In Java
Using Barcode drawer for Android Control to generate, create Code 128 Code Set A image in Android applications.
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Lesson 2: Working with Images
C. ImageFormat.Jpeg D. ImageFormat.Png 4. Which format is the best choice to use if you want to save a pie chart that could be opened by a wide variety of applications A. ImageFormat.Bmp B. ImageFormat.Gif C. ImageFormat.Jpeg D. ImageFormat.Png
6
Graphics
Lesson 3: Formatting Text
Developers often add text to images to label objects or create reports. This lesson describes how to add formatted text to images.
After this lesson, you will be able to: Describe the process of creating the objects required to add text to images Create Font objects to meet your requirements for type, size, and style Use Graphics.DrawString to annotate images with text Control the formatting of text Estimated lesson time: 30 minutes
How to Add Text to Graphics
You can add text to images by creating an instance of the Graphics class, in the same way that you add solid objects. At a high level, you follow these steps: 1. Create a Graphics object, as discussed in Lessons 1 and 2 earlier in this chapter. 2. Create a Font object. 3. Optionally, create a Brush object if none of the standard Brush objects meet your needs. 4. Call Graphics.DrawString and specify the location for the text.
How to Create a Font Object
The Font class offers 13 different constructors. The simplest way to create a Font object is to pass the font family name (as a string), font size (as an integer or float), and font style (a System.Drawing.FontStyle enumeration value). For example, the following constructor creates an Arial 12-point bold font:
' VB Dim F As Font = New Font("Arial", 12, FontStyle.Bold) // C# Font f = new Font("Arial", 12, FontStyle.Bold);
You can also create a new Font object using a FontFamily, as the following code shows:
' VB Dim Ff As FontFamily = New FontFamily("Arial") Dim F As Font = New Font(Ff, 12)
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